First, enter ’25’, ’50’, or ‘100’ – then double-click on the red marker of that number of closest World 50K+ cities to your geographic location (as determined by your browser’s location function). To use this quiz you will have to choose ‘Allow’ if your browser asks to share your current location – you also may have to restart the quiz after choosing this. If your browser does not allow getting your location the quiz will not load.
Correct guesses will change the marker to green – incorrect will not change any marker. Complete all cities to save your score.
If by chance you don’t see markers, try refreshing the quiz.